Holmes Lake Dam Reservoir Report

Last Updated: December 5, 2025

Holmes Lake Dam, located in Guadalupe, Texas, was completed in 1964 and serves as a recreational site along the Sandy Hollow River.


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Summary

The dam stands at 24 feet high with a length of 850 feet, providing a storage capacity of 298 acre-feet. Despite its primary purpose being recreation, the dam also plays a role in water resource management in the area.

The dam, classified as an Earth dam with Buttress core, has not been rated for its condition assessment, but is considered to have a high hazard potential. There are no spillways associated with the dam, and it is not regulated by the state. While there are no current inspection or emergency preparedness details available, the dam remains a significant structure in the region, attracting water resource and climate enthusiasts to its serene surroundings.

Overall, Holmes Lake Dam stands as a notable landmark in the region, providing both recreational opportunities and water resource benefits. With its picturesque location and historical significance, the dam continues to draw visitors and serve as a point of interest for enthusiasts interested in the intersection of water resources and climate management.

Year Completed

1964

Dam Length

850

Dam Height

24

River Or Stream

SANDY HOLLOW

Primary Dam Type

Earth

Surface Area

14

Hydraulic Height

24

Nid Storage

298

Structural Height

24

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

24
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.